881163649 has 4 divisors (see below), whose sum is σ = 919475136. Its totient is φ = 842852164.

The previous prime is 881163581. The next prime is 881163733. The reversal of 881163649 is 946361188.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-881163649 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 881163599 and 881163608.

It is not an unprimeable number, because it can be changed into a prime (881163449) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19155709 + ... + 19155754.

It is an arithmetic number, because the mean of its divisors is an integer number (229868784).

Almost surely, 2^881163649 is an apocalyptic number.

It is an amenable number.

881163649 is a deficient number, since it is larger than the sum of its proper divisors (38311487).

881163649 is a wasteful number, since it uses less digits than its factorization.

881163649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38311486.

The product of its digits is 248832, while the sum is 46.

The square root of 881163649 is about 29684.4007687539. The cubic root of 881163649 is about 958.7061740768.

The spelling of 881163649 in words is "eight hundred eighty-one million, one hundred sixty-three thousand, six hundred forty-nine".